package com.sky.aspect;


import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {

    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void autoFillPointCut() {

    }
    @Before("autoFillPointCut()")
    public void autoFill(JoinPoint joinPoint) {
        log.info("开始公共字段填充。。。");
        MethodSignature signature =(MethodSignature) joinPoint.getSignature();
       AutoFill autoFill= signature.getMethod().getAnnotation(AutoFill.class);
       OperationType operationType = autoFill.value();

       Object[] args = joinPoint.getArgs();
       if (args == null || args.length==0){
           return;
       }
       Object entity = args[0];

        LocalDateTime now = LocalDateTime.now();
        Long CurrentId = BaseContext.getCurrentId();

        if (operationType == OperationType.INSERT){
            try {
                //插入操作，设置创建时间，创建人
             Method setCreateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
             Method setCreateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
             Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
             Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
             setCreateTime.invoke(entity,now);
             setCreateUser.invoke(entity,CurrentId);
             setUpdateTime.invoke(entity,now);
             setUpdateUser.invoke(entity,CurrentId);
            }catch (Exception e){
                e.printStackTrace();
            }
        }else if (operationType == OperationType.UPDATE){
            try {
                //插入操作，设置创建时间，创建人
                Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
                setUpdateTime.invoke(entity,now);
                setUpdateUser.invoke(entity,CurrentId);
            }catch (Exception e){
                e.printStackTrace();
            }
           //更新操作，设置更新时间，更新人
        }
    }
}
